| 摘要 |
A spatial input device includes a light beam scanner that emits light beams toward a spatially projected image while two-dimensionally scanning the light beams, a photodetector that detects the light beams that have been reflected by an input object within a detection range, with the detection range extending inward of the spatial input device relative to the image, and a controller that counts a scan line number indicative of a number of the light beams that have been detected by the photodetector, and detects a depth position of the input object based on the scan line number. The controller further detects the depth position of the input object based on a depth conversion table, with the depth conversion table specifying depth layer levels corresponding to scan line numbers. |
